Portable computer



FIG. 1 is a perspective view of a portable computer showing my new design, where the top portion of the portable computer is in an open position;

FIG. 2 is a perspective view of the portable computer on an enlarged scale, where the top portion of the portable computer is in a closed position;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a front elevational view thereof;

FIG. 6 is a back elevational view thereof;

FIG. 7 is a right side elevational view thereof; and,

FIG. 8 is a left side elevational view thereof. 

The ornamental design for a portable computer, as shown and described. 